Car pusher



L. SABO CAR PUSHER Dec. 9, 1924 Filed Aug. 21, 1924 H mIh EMA,

Patented Dec. 9, 1924*.

LOUIS SABO, 0F CAROLINA. WEST VIRGINIA.

CAR PUSHER.

Application filed August 21, 1924.

To all whom it may concem:

Be it known that 1, Louis SABO, residing at Carolina, in the county of Marion and State of West Virginia, a citizen of the Republic of Hungary, have invented or discovered certain. new and useful improvements in Car Pushers, of which improvements the following is a specifi ation.

My invention relates to improvements in car pushers, and consists in features of structure rendering such an instrument most effective,directing the force applied most efficiently for moving the car.

The car pusher of my invention is illustrated in the accompanying drawings in which Fig. I is a view of the instrument in side elevation, the operating arm being for convenience in illustration truncated. Fig. IT is a view in section on vertical and medial plane. Fig. HT is a view in section on the plane indicated by the line TIL-TIT, Fi I. Fig. TV is a view in vertical section on the plane indicated at TVTV, Fig. TH. Fig. V is a view in section, on a plane at right angles to that of Fig. TV, the plane being indicated at VV, Fig. TIT.

The instrument includes a shoe 1, a link 2, with its bearing block 3, and a. lever 4.

The shoe 1 is of the arc shape best shown in Figs. I and IT. It is adapted near one end to bear upon rail from above, and at the tip adjacent to the said point of railbearing, to bear upon a car wheel from be low. It is provided with a rail-engaging device whose position is indicated at 5 in Fig. l, and with a wheelengaging block indicated at 6. The rail-engaging device consists of a casing to which the numeral 5 is in Fig. I immediately applied. This casing is of a. general cylindrical form and extends transversely. It is open below. Within this casing 5 is removably secured a keeper 7. Suitable means for securing the keeper in place within the casing 5 are illustrated in Figs. TI, HT, and V; the keeper 7 is here shown to be bolted to place by a bolt 8 conveniently applied through the upper side of the shoe. The keeper 7 is provided with recesses into which the blocks 9 may be introduced. Comparison of Figs. HI and TV will show that the recesses for these blocks 9 are open at the end so that the blocks 9 are placed by thrusting them longitudinally in at the opposite ends of the keeper. When they have so been thrust in, the keeper is introduced within the casing 5 and secured to Serial No. 733,358.

place. The keeper 7 is so particularly formed that when the blocks 9 are in place they protrude along one side of the keeper. The blocks 9 are angular in cross-section, conveniently square, the recesses in the keeper 7 are correspondingly shaped, and when the assembly is made the blocks 9 stand with sharp edges projecting through the openings in the sides of the keeper, and adapted to bite upon the surface of the rail. The shoe 1 with its casing 5 and the keeper 7 will preferably be made as steel castings. The blocks 9 will be made of tool steel. The structure in this respect then is one which is well adapted for economic use of material and economic fabrication. The provision of removability of the blocks 9 from the keeper 7 makes possible replacement, and also makes possible the shifting of a 7 particular block from one position to another, as its effective edge becomes dull or mutilated.

The block 6 will present an extended friction-affording surface of contact to the surface of the tread of the wheels. To this end the block 6 may be made of suitable material, soft metal for example, and may be insertec in a recess formed to receive it in the casting which constitutes the shoe 1.

The link 2 is pivoted at the opposite end of the shoe. Thus the shoe 1 becomes a lever of which blocks 9 are the fulcrum. The arm which carries the block 6 is the work arm and the arm to which the link 2 is pivoted is the power arm. To the free end of the link 2 a block 3 is pivoted, suitable in shape and of suitable material to engage over an extended surface the tread of a car wheel, and to make frictional bearing thereon.

To the shoe 1 at a pointintermediate the fulcrum blocks 9 and the point of pivoting of link 2, the operating lever l is pivoted. This of course is a manually swung lever and in ordinary construction will consist of a long rod 10 of wood fitted into a cast iron ferrule to which the numeral lis immediately applied. The work arm of this lever l, 10 is connected by pin and slot connection with the link 2. As here particularly shown, the work arm of the lever carries a pin 11 which enters an elongated slot 12 formed in link 2.

Operation is manifest. .Vhen the pusher is to be used the operating handle 10 is raised and the shoe is thrust along a rail and beneath the wheel of the car which is to be moved, until blocks 9 engage the tread of the rail and block 6 engages the tread of the car wheel. The swinging block 3 adapts itself to engagement with the car Wheel at a higher point. The operator then exerts his weight downward upon the arm 10 and immediately the leverage is shifted. Initially, and for purposes of positioning, the point of bearing of block 6 upon the car wheel is the point Where leverage is applied. Immediately there is a shift, and leverage is applied over the area of contact of block 3 upon the tread of the car wheel. The lever is a compound lever of which one fulcrum is the point of pivoting of the arm 4 in the shoe 1, another fulcrum is a point where the blocks 9 borne by the shoe engage the track. The link 2 affords a third element in this compound lever, and in this third lever the power is applied at the point of bearing of the pin 11 upon the slot 12. a very powerful leverage and this, with the additional circumstance that the block 3 I thus obtain automatically adjusts itself in its bearing upon the tread of the wheel, affords me most effective application of power to the driving of the car forward along the rail.

1 claim as my invention:

In a car-pusher the combination of a shoe adapted at one end to engage a rail from above and a car wheel from below, a link pivoted to the opposite end of said shoe and adapted at its free end to make engagement upon the tread of a car wheel, and an operating lever fulcrumed in said shoe at a point intermediate the ends of the shoe, the power arm of said lever being prolonged and constituting the handle of the instrument, and the work arm of the lever engaging said link at a point remote from its center of pivoting.

In testimony whereof I have hereunto set my hand.

LOUIS SABO.

Witnesses:

NELLA MASON, C. A. STAROHER. 

